Gas inlet devices

Through one of the side arms of a clean, dry, 1-L three-necked round-bottomed flask (FI, Fig. 1) a gas inlet device (D) is inserted consisting of an inlet tube, which is fitted with a three-way stopcock (T-bore) and a septum. 

Another difficulty of this process was low ccxiversion in the commercial plant, which could not be predicted from the results of the pilot plants. Grekel et al. (G15) reported the effects of particle size distribution, gas inlet devices, and internals, cm contact efficiency. Volk et al. (VI2) also emphasized the effect of bed internals. These developmental studies became a very useful guide for applications of fluidized catalyst beds. 

The swan neck adapter of Fig. II, 56, 12 is useful for distillations as it permits the use of a capillary tube (held in position by a short length of heavy-walled rubber tubing) not sealed to a ground joint. It may also be used for inser tion of a thermometer or a gas-inlet tube in the narrow neck and a reflux condenser into the ground joint this device virtually converts a three-necked into a four-necked flask. Common sizes are cone fil9, 24, 29, or 34 socket 19, 24 or 29. 

In some inlet devices, the volatile sample materials are first separated from entrained hydrogen gas or air by condensing them in a coolant bath. Subsequently, when all of the volatile sample components have been condensed and the hydrogen or air has been swept away, the sample is reheated and sent to the plasma flame. 

Special sample inlet devices such as nebulizers, furnaces, and gas inlets are commonly used to avoid cross-contamination and accidental fractionation of isotopes. 

The open lower ends of shaker-cleaned filter bags are fastened over openings in the tube sheet that separates the lower, dirty-gas inlet chamber from the upper clean-gas chamber. The bags are suspended from supports, which are connected to a shaking device. 

Dissolve 175 g of KOH in 1,750 ml of water in a flask of 5 liters volume equipped with a reflux condenser and a gas inlet tube. If a stirring device is not required, it should be removed and the open neck stoppered. Heat the mixture to 80° under a stream of nitrogen and add 500 g of ergotamine tartrate. Hold the temp at 80° for 2Vi hours with bubbling from the nitrogen filled gas inlet tube. Pour the mixture into a 5 gallon polyethylene bucket (made from the same... 

DC Diaphragm controller P Vacuum pump M Measuring and switching device PS Pressure sensor V1 Pump valve V2 Gas inlet valve TH Throttle... 

Results presented were determined at a partial load of the device (1-2 kW for the LHV of the hydrogen produced). At a burner off-gas (heating gas) inlet temperature of 350 °C, a S/C ratio of 1.5 and a pressure of 3 bar, full conversion of the methanol was achieved and 0.9 m3 h 1 hydrogen were produced. The hydrogen production rate was regarded as competitive with literature data. 

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